Hey, thanks for the info! I'm about to buy a 160+160w combo for brickless build, now I'm defenetely waiting!
So you almost answered my biggest question!
Looks like new PSU will be same size in two dimentions, except maybe longer. (???x52x40mm)
To sum up:
170mm + any height GPU - PSU in front
190+mm +112mm height GPU - PSU in bottom (longer GPU, because no room for PCI-e connector???)
And if you have "wrong" motherboard layout (like mine) you can put PSU in front, next to motherboard and use pretty much any GPU up to 215mm.